1. Medicine and Health Sciences Faculty, Drugs and Toxicology Division; An-Najah National University; Omar Ibn Al-Khattab St., PO Box 7, Nablus, West Bank Palestinian Territories
2. Biological Sciences; Clemson University; 132 Long Hall St., Clemson SC 29634 USA
3. Environmental Toxicology Program; 132 Long Hall St., Clemson University; Clemson SC 29634 USA